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Events confirmed from ARLINGTON ISD's official calendar.

SEGUIN H S — School Calendar 2026-27

High|ARLINGTON, Texas|ARLINGTON ISD

ARLINGTON, TX 76002

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Upcoming Events

Oct
9
Fri
Student Holiday / Parent ConferencesHolidayDistrict-wide

Banks, government offices, and schools may be closed.

Oct
12
Mon
Student & Staff HolidayHolidayDistrict-wide

Banks, government offices, and schools may be closed.

Nov
2
Mon
Student & Staff HolidayHolidayDistrict-wide

Banks, government offices, and schools may be closed.

Nov
3
Tue
Student HolidayHolidayDistrict-wide

Banks, government offices, and schools may be closed.

Nov
23
Mon
Thanksgiving BreakBreakDistrict-wide

Banks, government offices, and schools may be closed.

Dec
17
Thu
Early Dismissalhalf_dayDistrict-wide
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School Profile

Grades
9–12
Enrollment
1,562
Student:Teacher
13.1:1
Locale
Urban
District
ARLINGTON ISD
Econ. Disadvantaged
74.5%

School Statistics

Academics (SY 2020-21)

ELA Proficiency
45%
63th percentile in TX
Math Proficiency
32%
46th percentile in TX
Graduation Rate
95%
Chronic Absenteeism
9.1%
SY 2019-20

Programs & Activities (SY 2021-22)

AP Program
22 courses offered
526 students enrolled
Gifted & Talented
170 students enrolled
Dual Enrollment
80 students enrolled
SAT/ACT
645 test takers
Athletics
26 sports, 46 teams
603 participants
Student-Teacher Ratio: 9.1:1
Better than average in TX

Staff & Support Services (SY 2021-22)

Teachers (FTE)
171.71
68% fully certified
Counselors
6
Nurses
1
Anti-Bullying Policy

District Finance (FY 2023)

Per-Pupil Spending
$11,746
Total current expenditure
Instruction Spending
$7,027
Per pupil, classroom only
Total Revenue/Pupil
$15,614
All funding sources
Funding Sources
Federal 18%State 21%Local 61%
District-level data from NCES F-33 Survey

Community Context

Median Home Value
$362,142
-3.8% 1yr+26.1% 5yr
Dallas, TX metro area
Community Need Level
Elevated
CDC/ATSDR Social Vulnerability Index 2022
Neighborhood Indicators (Census Tract)
19.7%
Below 150% poverty line
4.9%
Unemployment rate
16.9%
Uninsured residents
13.5%
No HS diploma (25+)

Special Education (IDEA)

District-level data from IDEA Part B · Students ages 3-21 served under IDEA

Total Students Served
6,867
Ages 3-21 under IDEA
School-Age (6-21)
6,568
Receiving special ed services
Est. % of Enrollment
100%
District rate, school may vary
Disability Categories (District)
Specific Learning Disability
2,534 (39%)
Autism
1,170 (18%)
Speech/Language Impairment
945 (14%)
Other Health Impairment
669 (10%)
Intellectual Disability
654 (10%)
Emotional Disturbance
375 (6%)

Source: U.S. Department of Education, IDEA Section 618 Data · District-level counts · Individual school figures may differ

Enrollment Trend (2014-2025)

1,554
Current enrollment
Stable(-3% 5yr)

Coming Up

Fri, Oct 9, 2026
Student Holiday / Parent Conferences

No School - Arlington Independent School District

Holiday
Mon, Oct 12, 2026
Student & Staff Holiday

No School - Arlington Independent School District

Holiday
Mon, Nov 2, 2026
Student & Staff Holiday

No School - Arlington Independent School District

Holiday

Full School Calendar 2026-27

Events marked District-wide apply to all schools in ARLINGTON ISD. SEGUIN H S follows the district calendar.

DateEvent
Mon, Sep 7, 2026
Student & Staff HolidayDistrict-wide
No School - Arlington Independent School District
Tue, Sep 8, 2026
Student HolidayDistrict-wide
No School - Arlington Independent School District
Fri, Oct 9, 2026
Student Holiday / Parent ConferencesDistrict-wide
No School - Arlington Independent School District
Mon, Oct 12, 2026
Student & Staff HolidayDistrict-wide
No School - Arlington Independent School District
Mon, Nov 2, 2026
Student & Staff HolidayDistrict-wide
No School - Arlington Independent School District
Tue, Nov 3, 2026
Student HolidayDistrict-wide
No School - Arlington Independent School District
Mon, Nov 23, 2026
Thanksgiving BreakDistrict-wide
Thanksgiving Break - Arlington Independent School District
Thu, Dec 17, 2026
Early DismissalDistrict-wide
Mon, Dec 21, 2026
Student & Staff HolidayDistrict-wide
Mon, Jan 11, 2027
Professional Development DayDistrict-wide
Student Holiday
Mon, Jan 11, 2027
Student HolidayDistrict-wide
Mon, Jan 18, 2027
Student & Staff HolidayDistrict-wide
No School - Arlington Independent School District
Fri, Feb 12, 2027
Student Holiday / Parent ConferencesDistrict-wide
No School - Arlington Independent School District
Mon, Feb 15, 2027
Student & Staff HolidayDistrict-wide
No School - Arlington Independent School District
Tue, Feb 16, 2027
Student HolidayDistrict-wide
No School - Arlington Independent School District
Mon, Mar 15, 2027
Spring BreakDistrict-wide
Spring Break - Arlington Independent School District
Fri, Mar 26, 2027
Student HolidayDistrict-wide
Bad Weather Makeup Day (if needed)
Fri, Mar 26, 2027
Student & Staff Holiday / Bad Weather Makeup Day (conditional)District-wide
No School - Arlington Independent School District
Fri, Apr 23, 2027
Student & Staff Holiday / Bad Weather Makeup Day (conditional)District-wide
No School - Arlington Independent School District
Fri, Apr 30, 2027
Student & Staff HolidayDistrict-wide
Bad Weather Makeup Day (if needed)
Tue, May 25, 2027
Early DismissalDistrict-wide
Wed, May 26, 2027
Early DismissalDistrict-wide

Showing 22 events for the 2026-27 school year

Frequently Asked Questions about SEGUIN H S

SEGUIN H S has a total enrollment of 1,562 students and serves grades High. The school is part of the local school district in ARLINGTON, TX.

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School profiles: Data from NCES Common Core of Data. Calendar events from district calendar sources, updated automatically. · How we verify this data